Civil Aircraft Accidents Investigation We will respond to aircraft accidents as soon as possible but if the accident is within 15 km radius of Windhoek we will respond within 15 minutes from the time the occurrence has been reported to us. Search & Rescue Incerfa: within 30 minutes when no communication was received from an aircraft. A preliminary report of the known facts will be issued as soon as possible. Alerfa / Detresfa: will be declared as the situation deteriorates, except when there is reasonable certainty that the aircraft is not threatened by grave and imminent danger and do not require immediate assistance. Report(s) should be completed and submitted to the Minister for publication within 90 working days if it is not required to send any aircraft parts abroad for analysis.